<!DOCTYPE html>
<html lang="en">

<head>
    <meta charset="UTF-8">
    <meta http-equiv="X-UA-Compatible" content="IE=edge">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Document</title>
    <script src="./src/react.js"></script>
    <script src="./src/react-dom.js"></script>
    <script src="./src/babel.js"></script>
</head>

<body>
    <div id="app"></div>
</body>
<script type="text/babel">
    class Jishuqi extends React.Component{
        constructor(){
            super();
            this.state={
                n:111
            }
        //    this.dianji=this.dianji.bind(this)
           console.log(this);
        }
        dianji=()=>{
          const n =this.state.n+1
          this.setState({n:n})
           
        }
        render(){
           return (<div>
            <h1>{this.state.n}</h1>
            <button onClick={this.dianji}>按钮</button>
            </div>) 
        }
    }
    ReactDOM.render(
    <Jishuqi></Jishuqi>,
    document.getElementById('app')
    )
</script>

</html>